Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/mips/kernel/kprobes.c b/arch/mips/kernel/kprobes.c
index 54cd675..6cfae24 100644
--- a/arch/mips/kernel/kprobes.c
+++ b/arch/mips/kernel/kprobes.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  Kernel Probes (KProbes)
  *  arch/mips/kernel/kprobes.c
@@ -8,19 +9,6 @@
  *  Some portions copied from the powerpc version.
  *
  *   Copyright (C) IBM Corporation, 2002, 2004
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; version 2 of the License.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #include <linux/kprobes.h>
@@ -232,7 +220,7 @@
 
 unaligned:
 	pr_notice("%s: unaligned epc - sending SIGBUS.\n", current->comm);
-	force_sig(SIGBUS, current);
+	force_sig(SIGBUS);
 	return -EFAULT;
 
 }
@@ -410,7 +398,7 @@
 	return 1;
 }
 
-static inline int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
+int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
 {
 	struct kprobe *cur = kprobe_running();
 	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();